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Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 29,253
ACL Allocation	33,855	$ 19,789
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	25,150
Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,070
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,377
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	656
Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	2,637
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,125
Commercial | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,070
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	55
Commercial | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	56
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,974
Leases | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,377
Leases | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	597
Leases | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	880
Commercial real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4,179
Commercial real estate - Investor | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4,179
Commercial real estate - Investor | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	84
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	9,726
Commercial real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	9,726
Commercial real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	195
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,891
Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,891
Construction | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	952
Real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	928
Real estate - Investor | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	928
Real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,535
Real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,535
Real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	10
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,838
Multifamily | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,838
Multifamily | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	378
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,053
HELOC | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,053
HELOC | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	78
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4
Other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4
Other | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	$ 4

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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